20 Best Email Subject Lines To Increase Email Open Rates – Actionable Tips & Examples

Email marketing has always been the best marketing tactic for all online businesses. Professionals rely heavily on email marketing to generate leads, increase conversions, and grow their businesses always.

And nowadays, the inbox of everyone is flooded with tons of emails. So, it is challenging for you to get higher open rates.

Hence, you must use a good subject line for emails that stand out in the inbox. Since the subject line is the first thing your recipient will see, it will act as the main deciding factor in whether or not people will open your email.

According to Super Office, 33% of recipients decide whether to open an email or not based on the subject line alone.

Whether you’re a small business owner, marketer, or freelancer, a good subject line is essential for email marketing success.

In this article, we will look at,

• how you can write the best email subject lines that will stand out in the inbox
• help you increase your email open rates.

And eventually, you may expect more successful email campaigns for your business.

So let’s begin.

Email Subject Line Best Practices

When writing email subject lines, you need to consider a lot of factors that will help to increase the chances of your leads opening your emails.

Following are a few best practices that most businesses follow when writing subject lines.

1. Keep It Short & Concise – 5-7 Words Or Fewer

It is advised to include at most 5 to 7 words in your subject line. While this is not mandatory, it helps the reader to view it at a single glance in his/her email platforms.

2. Personalize Where Possible

Personalizing the subject line can help to gain the trust of the prospect in your email. To do so, you may include the prospect’s name or other relevant other personal information about the prospect in the subject line. Or, simply use the second-person point of view (by using “you”).

3. Give a Clear Message

Your email subject should give a hint of what the reader may expect in the email body. Do not simply write a generic subject line that doesn’t pique the interest of your prospects.

4. Avoid Using All Caps

Using all caps can come across as aggressive and spammy. Instead, use proper capitalization.

5. Reduce The Use Of Spammy Words

There are certain words that most email clients consider as spammy words. These may include words such as “free,” “limited time offer,” “act now,” etc.

However, this doesn’t mean you cannot use these words at all. The context of the subject line and the email body determines if a word is considered spammy.

6. Consider Using Emojis

Since a prospect will see a lot of emails in the inbox, one good way to stand out is by using clever emojis. An emoji will act as a single out-of-the-crowd object that will draw the attention of the prospect.

7. Avoid Exggerated Subject Lines

When running or planning email campaigns, it’s natural for you to want to create excitement. But this should not lead to exaggerating what you have to offer in your email. For example, last week, we received a spam marketing email with the following subject line: “Best advice you will ever get…”

Now, this subject line has two red flags. – First, this doesn’t tell me what the email is about. – Second, calling what’s in there the “best” rather makes me more skeptical about it than excited.

20 Types Of Best Email Subject Lines Strategy To Maximize Email Open Rate

Different marketing campaigns may require different types of email campaigns. Which means each has a different approach to the subject line.

Among many different types of email subject lines. In this section, Let’s look at the 20 most popular types of email subject lines you need in various situations.

For each, you will learn 5 use cases along with examples. These will help you plan out your next email campaign with the right subject line strategy for maximum results.

So let’s dive in.

1. Personalized Subject Lines

Personalized email subject lines are a powerful way to make your customers feel as if you’re addressing them directly, which increases the chances of them opening your email.

This could be by using the name, location, company name, etc., on the subject line to single out your target audience.

Following are 5 use cases that work quite well.

i. First name personalization

You can grab the recipient’s attention by including their first name in the subject line, making the email feel more personalized.

Example: Hey [First Name], we have a special offer just for you!

ii. Location-based personalization

If you have information about your recipient’s location, you can use it to create a subject line that speaks directly to them.

Example: We’re coming to [City Name] with our new products!

iii. Previous purchase personalization

You may write exclusive emails to your customers that have already made a purchase and make more offers with thank you email subject lines.

Example: Thanks for your recent purchase, [First Name]. We think you might like this!

iv. Abandoned cart personalization

If your recipient left items in their cart without completing the purchase, you can use that information to create a subject line that reminds them of what they left behind. It will help the process of abandoned cart recovery.

Example: You forgot something in your cart, [First Name] – don’t miss out!

v. Special occasion personalization

You may surprise your prospect on any of their special days, such as birthdays, marriage days, membership anniversaries, etc., with something special.

Example: Happy Birthday, [First Name] – here’s a surprise gift for you!

More examples of personalized subject lines:

• [First Name], here’s something just for you
• How [Company Name] can benefit from our services
• [First Name], congratulations on [Recent Accomplishment]
• [First Name], a special offer just for you
• [Company Name] + [Recipient Company Name] = Perfect Match?
• [First Name], let’s catch up on [Topic of Interest]
• Thanks for being a loyal customer, [First Name]
• [First Name], here’s a special treat just for you

Remember to keep the personalization relevant to the client’s interests. Thus, you increase the chances of getting a response and building a stronger relationship with them.

2. Curiosity Email Subject Lines

The aim of curiosity email subject lines is what the title suggests – to pique the curiosity of the reader to see what’s on the email.

Let us look at 5 use cases with examples to get a better idea of how to use such subject lines.

i. Ask a Question

You may ask an interesting question to the recipient and makes them want to open the email to find out the answer.

Example: Are you making these common mistakes with your diet?

ii. Create a Mystery

Use a subject line that creates a sense of mystery and intrigue, leaving the recipient wondering what’s inside the email.

Example: You won’t believe what we found in the attic…

iii. Use Numbers & Statistics

Numbers can be eye-catching and indicate that the email contains a list or specific information that the recipient might be interested in.

Example: 5 ways to boost your productivity in just 10 minutes a day.

iv. Use Power Words That Builds Excitement

Use powerful words to help grab your prospect’s attention. This attention creates a sense of urgency or excitement.

Example: Don’t miss out on this once-in-a-lifetime opportunity!

v. Make a Bold Statement

Use a subject line that makes a bold statement that challenges the recipient’s beliefs or assumptions.

Example: You’re wasting time on the wrong email tactics – here’s what you should be doing instead.

More Examples Of Curisioty Email Subject Lines

• Is this the missing piece of your [product/service] puzzle?
• We uncovered a surprising trend in your industry
• Don’t open this email unless you want to [benefit]
• The #1 mistake [target audience] makes and how to avoid it
• Ready for a game-changing [product/service] upgrade?
• Are you making these [number] common [topic] mistakes?
• A little-known hack for [desired outcome] that works every time
• The shocking truth about [topic/industry]
• Why [popular belief] is actually wrong

Remember, the goal is to spark curiosity and encourage the recipient to open your email to learn more.

3. Time-Sensitive Subject Lines

Time-sensitive subject lines are effective in creating a sense of urgency and FOMO (fear of missing out) among clients, which can lead to higher open rates and conversions.

Here are 5 effective use cases.

i. Limited-time offer

Let the recipient know that the offer is only available for a limited or one-time offer to create a sense of urgency.

Example: Only 24 hours left to get 20% off your purchase!

ii. Event or webinar reminder

Remind the recipient about an upcoming event or webinar they registered for to make sure they don’t miss it.

Example: Don’t forget – the webinar starts in just 2 hours!

iii. Urgent call-to-action

Use urgent language to encourage the recipient to take immediate action.

Example: Act now to secure your spot before it’s too late!

iv. Limited stock or availability

Let the recipient know that the product or service is in high demand and there is only a limited amount available.

Example: Less than 500 tickets left for this exclusive event – book now!

v. End-of-season or holiday promotions

Remind the recipient before your promotional campaign or sale is about to come to an end soon.

Example: Last chance to get your summer wardrobe at 50% off – sale ends tomorrow!

More Examples Of Time-Sensitive Email Subject Lines:

• 24-hour flash sale: 50% off all product
• Only 3 hours left to claim your free trial.”
• Today only: buy one, get one free
• Limited time offer: save $50 on your first purchase
• Hurry! Early bird registration ends tomorrow
• Final hours to get your hands on our best-selling product
• Last chance to register for our webinar on [topic]
• Act fast! Limited stock available on [product]
• Time is running out: enroll in our course before the deadline

Now, while it is a great tactic to use scarcity and urgency to your advantage, it is important to be truthful about it. Do not announce a false alarm if you want to create the best email subject lines.

4. Benefit-Focused Subject Lines

People are always excited about the benefits they may get from a product or service. So highlighting a benefit or advantage for the prospect in the email subject line is often a great approach.

Let us look at 5 use cases for this.

i. Time-saving benefits

Highlight how the product or service can save the recipient time.

Example: Save hours of your time each week with our new automated software!

ii. Money-saving possibility

Highlight how the product or service can save the recipient money.

Example: No more expensive gym memberships – Get fit at home at half the price

iii. Improved Convenience

Highlight how the product or service can make the recipient’s life more convenient.

Example: Get your groceries delivered straight to your door with our easy-to-use app!

iv. Problem-solving subject line

Highlight how the product or service can solve a problem the recipient is facing.

Example: Struggling to fall asleep? Check out our proven all-natural sleeping aids!

v. Personal growth benefits

Highlight how the product or service can help the recipient achieve personal growth or self-improvement.

Example: Expand your language horizons with our premium online language courses!

More Examples Of Benefit-Focused Subject Lines:

• Transform your [Problem] into [Benefit] with [Product/Service]
• Achieve [Benefit] in just [X] days with [Product/Service]
• How to [benefit] like a pro
• The [benefit] trick that changed everything
• Discover the hidden [benefit] potential of [product/service]
• Unlock the power of [Benefit] with [Product/Service]
• Experience [Benefit] like never before with [Product/Service]
• Discover how [Product/Service] can help you achieve [Benefit]
• Get [Benefit] now with our exclusive [Product/Service] offer
• Say goodbye to [Problem] and hello to [Benefit] with [Product/Service]

The benefit doesn’t always have to be a specific product or service based. You can also nurture leads and customers with tips and strategies to help their business.

5. Question-Based Subject Lines

Asking questions is a brilliant way to make the customer feel like he/she is an important part of the conversation. This can easily be used on email subject lines to increase curiosity and desire to open the email.

It’s important to consider your target audience when crafting a question-based subject line. Send the most relevant and engaging questions to them.

Let us look at a few use cases for it.

i. Informational question

Ask a question showing interest in the recipient’s needs or challenges.

Example: Did you know these 10 benefits of daily cardio?

ii. Challenge question

Ask a question that challenges the recipient to do something or take action.

Example: Can you complete this 30-day healthy eating challenge?

iii. Benefit-focused question:

Highlights the benefits or advantages of a product or service through a question.

Example: Looking to improve your skin? Discover the new vitamin C serum.

iv. Inquisitive question

Ask a question that shows your interest in the recipient’s needs or challenges.

Example: What are your biggest goals for this year? Let’s achieve them.

v. Rhetorical Questions:

Use a rhetorical approach to make a statement or emphasize a point.

Example: Can you really afford to miss out on 12 months of savings?

vi. Problem-Solving Questions

Identify a problem the recipient may have to suggest that you have the solution in the email.

Example: Are you struggling to manage your workload effectively?

More Examples Of Question-Based Subject Lines:

• Are you ready to take your [industry-specific] skills to the next level?
• Want to know the secret to our best-selling [Product/Service]?
• How can we help you achieve your [specific goal]?
• Are you missing out on these exclusive [benefits]?
• What if you could [solve the specific problem]? Here’s how.
• Are you tired of [common pain point]? Let us help.
• What would [specific benefit] mean for your [industry/business/goals]?
• Are you curious about our new [Product/Service]? Here’s a sneak peek.
• Have you heard about our latest [industry news/trends]?
• Are you making these common [industry-specific] mistakes? Here’s how to avoid them.

Since questions make people think, it is a brilliant tactic to influence open rates if the right question is asked.

6. Social Proof Subject Lines

Social proof subject lines can be a great way to showcase the credibility of your brand and convince clients to open your emails. By highlighting positive feedback or the number of satisfied customers, you can build trust and establish your authority in the industry.

Here are a few use cases:

i. Testimonial Subject Lines

Highlight positive feedback or testimonials from satisfied customers.

Example: See why our customers are raving about our product.

ii. Expert Endorsement

Feature endorsements or recommendations from well-known experts in your industry are a great way to grab the attention of potential buyers.

Example: Find out why [industry expert] recommends our service.

iii. User Success Statistics

Use data or statistics to show how many people use your product or service successfully.

Example: Join over 1 million users who have already signed up.

iv. Social Media Mentions

Highlight mentions or shoutouts on social media platforms.

Example: Check out what people are saying about us on Twitter.

v. Awards and Recognition

Showcase any awards or recognition your company has received.

Example: See why we were named Best New Startup of the Year.

More Examples Of Social Proof Subject Lines:

• Over 1 million happy customers can’t be wrong
• Rated 5 stars by our satisfied customers
• Join our exclusive community of successful [professionals/entrepreneurs]
• See how [Industry leader/Influencer] recommends our [Product/Service].”
• Join the thousands of [professionals/entrepreneurs] who trust us
• Find out why [Brand] is the go-to choice for [Industry] experts
• Discover why [Number] people can’t get enough of our [Product/Service]
• Join [Industry leader/Influencer] and [Number] others who love our [Product/Service]
• See why our customers rave about our [Product/Service]
• Don’t miss out on the [Product/Service] that [Industry] professionals can’t stop talking about!

7. Storytelling Subject Lines

Storytelling subject lines can be a great way to capture the attention of your audience and create an emotional connection with them. In this case, the subject line gives scope to make the prospect expect a relatable story in the email.

i. Suspense And Curiosity

Create suspense and leave the reader wanting to know more.

Example: You won’t believe what happens to this multi-millionaire

ii. Emotion-Driven Subject Line

Evoke a strong emotional response from the reader.

Example: This heartbreaking story will move you to tears.

iii. Promote An Intriguing Character

Highlight an interesting or unique character to capture attention.

Example: Meet the inspiring woman who built an empire from $500

iv. Unconventional Wisdom

Challenge conventional thinking and offer a fresh perspective.

Example: Keyword difficulty no longer matters – new SEO secret revealed!

v. Lessons Learned Subject Line

Share a story that teaches a valuable lesson or offers practical advice.

Example: The lesson that changed the life of this entrepreneur

vi. Inspiring Journey Subject Line

Share a story of someone who overcame obstacles and achieved their goals.

Example: From homeless to billionaire: the incredible journey of one woman.

More Examples Of Storytelling Subject Lines

• The incredible journey of how we started our business
• How our product changed the life of [Customer/Client]
• The behind-the-scenes story of our latest launch
• How we overcame [Challenge] and succeeded
• The unexpected way our product helped [Benefit]
• The story of how we met [Influential Person]
• The mistake we made almost cost us everything. Learn How We Recovered From It
• The inspiring story of how we made a difference
• How [Celebrity/Influencer] uses our product to achieve [Benefit]
• The story of how we turned a setback into a success

These are useful when you are planning a long-term email series or product launches, or post-launch lead nurturing.

8. Humorous Subject Lines

Humor can be a powerful tool in making your email stand out and creating a positive association with your brand. But you have to consider if this goes well with your target audience.

Humorous emails mostly work well in publishing & book-selling niche, motivational event management firms, and entertainment businesses, but if you try, you may use them in other industries as well.

Let’s look at a few types of humorous subject lines/

i. Pun-based Subject Line

Use wordplay and puns to create a humorous play on words.

Example: You won’t be able to resist this story about a cat-tastic adventure.

ii. Pop Culture Reference

Use a popular culture reference to connect with your audience and make them laugh.

Example: This business success story is like an Avengers movie!

iii. Irony As Humor

Use irony to create a humorous contradiction.

Example: From hating TikTok to the biggest TikTok influencer!

iv. Playful Teasing Subject Line

Playfully tease your audience to make them laugh.

Example: This isn’t another boring meeting invite, we promise. Learn More

v. Self-Deprecation

Use self-deprecating humor to poke fun at yourself or your company.

Example: We are not rich, but we certainly can make you rich…

More Examples Of Humorous Subject Lines:

• The best thing since sliced bread? Our [Product/Service]
• What’s cooler than being cool? Our [Product/Service]
• The [Product/Service] that will make your boss say ‘wow.’
• Let’s taco ’bout our new menu of [Restaurant Name]
• Stop, hammer time (for our latest sale)
• Open if you like free stuff and puppies
• Why did the marketing guru cross the road?
• We won’t judge if you start your holiday shopping early
• This email is worth more than a Nigerian prince’s inheritance

9. Numbered List Subject Lines

Numbered list subject lines can capture the reader’s attention and create a sense of anticipation for what’s to come.

Here are 5 common use cases with examples:

i. Tips and Tricks

Provide a list of helpful tips and tricks related to your product or service.

Example: “5 tips for improving your email marketing strategy.”

ii. How-To Guides

Offer a step-by-step guide on how to do something related to your product or service.

Example: “10 steps to creating a successful social media campaign.”

iii. Benefits Lists

List the benefits or advantages of using your product or service.

Example: “7 ways our software can streamline your workflow.”

iv. Mistakes To Avoid

Warn the recipient of common mistakes to avoid related to your product or service.

Example: “6 mistakes to avoid when creating a website.”

v. Comparison Lists

Compare your product or service with competitors or other alternatives.

Example: “5 reasons why [Product Name] is better than [Competitor Product Name]”

More Examples Of Numbered List Subject Lines:

• 7 Surprising Benefits of [Product/Service]
• 10 Must-Have Tools for [Specific Goal]
• 5 Secrets to [Achieve Benefit]
• 8 Steps to [Specific Action]
• 3 Reasons Why [Industry Trend] is Here to Stay
• Top 5 Mistakes to Avoid When [Specific Action]
• The Ultimate Guide to [Topic] in [Year]
• 9 Ways to Make Your [Product/Service] Stand Out
• 4 Simple Tricks to [Achieve Specific Goal]
• The 6 Habits of Highly Successful [Profession/Industry]

10. Announcement Subject Lines

Announcement emails are crucial in informing clients about new products, services, or updates. It is essential to make sure that the subject line conveys the urgency of the announcement.

A personalized approach can also be effective in this case, as clients feel that they are given exclusive access to new products or services.

Here are a few use cases and examples of announcement subject lines.

i. Product Launch Announcements

Notify the recipient about a new product or service you’re launching.

Example: “Introducing the new and improved website builder.”

ii. Event Invitations

Invite the recipient to an upcoming event you’re hosting or attending.

Example: “Join the free webinar on Social Media Marketing this Monday”

iii. Partnership Announcements

Announce a new partnership or collaboration.

Example: “We’ve teamed up with [company name] to offer you even more value.”

iv. Milestone Celebrations

Celebrate a significant milestone or achievement.

Example: “We’ve hit 10,000 customers – thank you for your support!”

v. Policy Changes

Notify the recipient of any policy or procedural changes.

Example: “Important update: Changes in pricing for annual plans”

More Examples Of Announcement Subject Lines:

• Get ready for the game-changer: Introducing our latest [Product/Service].
• Experience the difference: Our new and improved [Product/Service] is here.
• You asked we deliver: Our latest update [Feature/Update] is now live!
• We’re excited to announce our partnership with [Company Name]
• Join us for the launch of our new [Product/Service]!
• We’ve got some big news – get ready for the big reveal!
• Our exclusive [Limited Edition/Product/Collection] is finally here!
• New arrivals just in time for [Season/Event] – see what’s in store.

11. Offer Subject Lines

Offer subject lines should mention that you’re presenting something special to your clients. Personalizing the offer based on the segments and behavior or preferences of your clients. This customer analysis can also double the engagement.

i. Discount Offers

Offer a discount on your product or service.

Example: “Get 20% off your next purchase.”

ii. Free Trial Offers

Offer a free trial of your product or service.

Example: “Try our software for free for 14 days.”

iii. Limited-Time Offers

Create a sense of urgency by offering a limited-time deal.

Example: “Last chance to get 50% off – offer ends tonight.”

iv. Bundle Offers

Offer a bundle deal with multiple products or services.

Example: “Save money with our website design package.”

v. Referral Offers

Offer a discount or reward for referring a friend.

Example: “Refer a friend and get $50 off your next purchase.”

More Examples Of Offer Subject Lines:

• Exclusive offer for loyal customers: 20% off your next purchase
• Limited time only: Buy one, get one free on all products
• Grab your discount: Sign up for our newsletter and receive 10% off your first order
• Don’t miss out on our flash sale: 24 hours only
• Get a gift with every purchase over $50
• Refer a friend and receive $20 off your next order
• Upgrade to premium and receive a 30-day free trial
• We miss you! Come back and receive 15% off your next purchase.

12. Cliffhanger Subject Lines

Cliffhangers can take your email open rates to the next level. By teasing the content inside the subject line, you can encourage them to open it and learn more.

Here are 5 use cases and examples of cliffhanger subject lines.

i. Storytelling Cliffhangers

Tease a story or anecdote that you’ll continue in the email.

Example: “You won’t believe what happened next…”

ii. Problem-Solving Cliffhangers

Pose a problem or question and promise to provide the solution in the email.

Example: “Struggling to increase website traffic? We have the answer.”

iii. Intriguing Cliffhangers

Tease something interesting or mysterious.

Example: “The secret to unlocking success? Read on to find out.”

iv. Shocking Cliffhangers

Tease something surprising or unexpected.

Example: “You won’t believe what we just discovered…”

v. Personalized Cliffhangers

Use personalization to tease something specific to the recipient.

Example: “We have some exciting news for you, [recipient name].”

More Examples Of Cliffhanger Subject Lines:

• The shocking truth about [Topic]…
• Can you guess what our biggest sale ever is?
• This is the one secret no one is telling you about [Industry]
• The top mistake you’re making in [Task]…
• The one thing you’re missing to achieve [Goal]…
• What we discovered about [Topic] will blow your mind
• You won’t believe the results we got from [Product/Service]
• The surprising reason why [Event/News] is changing everything
• We did the research and found the secret to [Benefit]
• The one thing you need to know before [Task/Event]…

Cliffhanger email campaigns are most commonly used when running any viral campaign.

13. How-to Subject Lines

Using “how-to” in the subject line can indicate value and provide a solution to a problem or challenge. “How-to” emails are mostly used to promote blogs and courses to potential leads.

Here are a few examples of “How-to” subject lines:

i. Beginner’s Guides

Offer a beginner-friendly guide on how to do something.

Example: “How to get started with email marketing.”

ii. Advanced Techniques

Offer an advanced guide on how to do something.

Example: “Advanced SEO techniques for boosting website traffic.”

iii. Troubleshooting Guides

Offer a guide on how to troubleshoot a common problem.

Example: “How to fix a slow website.”

iv. Step-by-Step Guides

Offer a step-by-step guide on how to do something.

Example: “Step-by-step guide to creating a successful blog.”

v. Visual Guides

Offer a visual guide, such as an infographic or video, on how to do something.

Example: “Infographic: How to create a social media content calendar.”

More Examples of How-to Subject Lines:

• How to create a successful social media strategy in 5 easy steps
• How to optimize your website for search engines
• How to make a perfect cup of coffee at home
• How to write a winning resume that stands out
• How to declutter your home on a weekend
• How to create a budget that works for you
• How to meditate for better focus and productivity
• How to improve your public speaking skills
• How to plan the ultimate road trip

14. Pain Points Subject Lines

When creating pain point subject lines, it’s important to identify the pain points of your target audience and offer a solution or benefit that addresses their specific needs.

These emails can be effective in engaging potential customers who are actively seeking a solution to their problems.

Here are 5 cases of using Pain Point Subject Lines:

i. Time-Saving Barrier

Address a common time-consuming problem.

Example: “Stop wasting hours on writing emails – the new AI Assistant”

ii. Save Money

Refer to a common money-wasting problem.

Example: “Stop overspending on multiple tools for funnel building!”

iii. Focus on Relieving Stress

Highlight a common activity that enhances stress.

Example: “Tired of juggling multiple tasks? Time to reduce it!”

iv. Improve Efficiency

Address the problem of inefficiency

Example: “Simplify your workflow with this new productivity hack.”

v. Skill-Building Pain Points

Address a common lack of knowledge or skill.

Example: “Learn a new skill in just 15 minutes a day with this free course.”

More Examples Of Pain Points Subject Lines:

• Tired of feeling overwhelmed by your inbox?
• Struggling to [Pain-Point]? Try these tips.
• Are you wasting money on marketing that doesn’t work?
• Sick of dealing with [Pain-Point]? We have a solution.
• Don’t let your back pain hold you back. Try these exercises.
• Is your website not generating enough leads? Here’s why.
• Feeling stuck in [Pain-Point]? These courses can help.
• Are you struggling to get a [Pain-Point]? Try this.
• Tired of feeling like [Pain-Point]? Here’s how to change that.
• Are you constantly battling with stress? Try these mindfulness techniques.

15. Seasonal/Holiday Subject Lines

Using seasonal or holiday themes in your best email subject lines can make them more relevant and timely, increasing the likelihood of the email being opened and acted upon. It also adds a sense of urgency and excitement to the offer or message being communicated.

Here are a few actionable use cases.

i. Festive Offers

Tie your promotion with email campaigns to the holiday or season.

Example: “Celebrate the holidays with 20% off your purchase.”

ii. Seasonal Tips

Offer tips or advice relevant to the season or holiday.

Example: “5 tips for staying healthy during cold and flu season.”

iii. Limited-Time Promotions

Create a sense of urgency by offering a limited-time promotion.

Example: “Last chance to save on holiday gifts – sale ends tonight.”

iv. Seasonal Updates

Update your customers on changes related to the season or holiday.

Example: “Holiday shipping deadlines – order now to get your gifts in time.”

v. Thank You Notes

Show appreciation to your customers during the holiday season.

Example: “Thank you for your support this year – happy holidays from our team.”

More Examples Of Seasonal/Holiday Subject Lines:

Email Subject Lines for Fall Season:

• Fall into savings: 20% off all products
• Cozy up to our new fall collection
• Fall for our limited edition flavors
• Get ready for fall with our essential gear
• Discover the top trends for fall fashion
• Fall cleaning is made easy with our products
• Warm up your home this fall with our decor
• Autumn-inspired recipes to spice up your menu
• Be the talk of the town with our fall marketing strategies
• Fall events you won’t want to miss – RSVP now

Email Subject Lines For Halloween:

• Trick or Treat: Don’t Miss Our Halloween Sale
• Something Spooky This Way Comes: New Halloween Collection
• Ghoulishly Good Deals Inside: Halloween Flash Sale
• Boo-tiful Decor Ideas for Your Halloween Party
• Creepy-Crawly Crafts: DIY Halloween Projects
• Get Ready to Scream: Haunted House Tours Now Open
• Get Your Halloween Costumes Here: Exclusive Discounts Inside
• Spooktacular Savings: Halloween Marketing Services on Sale
• Enter if You Dare: Halloween Giveaway Contest Announced

Email Subject Lines For Thanksgiving:

• Spice up your Thanksgiving with our recipe guide
• Gobble up these deals! The Thanksgiving sale starts now
• Thanksgiving feast for your eyes: new fall arrivals
• Giving thanks to our loyal customers – take 20% off!
• Grateful for you: our Thanksgiving gift to you
• Stuff your cart, not just your turkey! Thanksgiving deals inside
• Thanksgiving prep is made easy with our [product/service]
• Give thanks and save big this Thanksgiving
• Turkey coma recovery kit: Black Friday deals sneak peek

Email Subject Lines For Christmas:

• Cozy up this winter with our collection of blankets and throws
• Deck the Halls with Savings: Our Christmas Sale is Here!
• Get in the Spirit with Our Festive Christmas Products
• Ho Ho Ho! Our Christmas Gift Guide is Here
• Wrap Up Your Christmas Shopping Early: Exclusive Offers Inside
• Christmas Comes Early: Our Special Preview Sale
• Have a Holly Jolly Christmas with Our Holiday Packages
• Don’t Be a Scrooge: Our Christmas Sale Ends Soon!

Email Subject Lines For New Year:

• New Year, New You: Achieve your goals with our products
• Start the New Year off right with [Product/Service]
• Ring in the New Year with our [Discount/Sale]
• New Year, New You: Our [Product/Service] can help
• Say goodbye to [Problem] in the New Year with our solutions
• Jumpstart your year with our expert advice
• A fresh start for your business in the New Year
• Start the year on the right foot with our [Tips/Advice]

Basically, seasonal subject lines are best suited to special occasions.

16. Cold Email Subject Lines

Cold email subject lines are great for starting conversations with new prospects and generating leads. A well-crafted cold email subject line can set the tone for the rest of the email and make a great first impression.

i. Pain Point Subject Lines

Address a common pain point or challenge your audience may be facing.

Example: “Are You Struggling to Increase Your Website Traffic?”

ii. Curiosity-Inducing Subject

Pique your recipient’s curiosity with an interesting question or statement.

Example: “Did You Know This Simple Trick Can Save You Hours Every Week?”

iii. Benefit-Driven Email

Highlight the benefits of your product or service to grab your recipient’s attention.

Example: “Revolutionize the Way You Work with Our Innovative Product.”

iv. Social Proof Subject Lines

Establish credibility by sharing the success stories of your past clients or customers.

Example: “How Our Solution Helped Similar Companies Grow by 50%.”

v. Limited-Time Offer Subject Lines

Create a sense of urgency by offering a limited-time promotion or deal.

Example: “Get 30% Off Our New Email Marketing Tool If You Act Now.”

More Examples Of Cold Email Subject Lines:

• Quick question about [specific industry or topic]
• Can I help you with [specific pain point or challenge]?
• Interested in [specific benefit] for your business?
• [Mutual connection] suggested I reach out to you
• How [competitor] improved their [specific metric]
• [Prospect’s company name]: Improving [specific metric]
• Regarding Your [Service Name]
• [Prospect’s company name]: [specific compliment or recognition]
• [Prospect’s company name]: [specific question about their industry or market]
• [Prospect’s name]: Interested in a [specific offer]?
• [Prospect’s name]: An idea for [specific goal or project].

17. Network-building subject lines

Network-based subject lines are an effective way to initiate contact with people in your professional network or to expand your network. This could also be a type of Introductory subject line to get in touch with new people in your network.

These subject lines are typically more personalized and focused on building relationships rather than just promoting a product or service.

Here are common use cases and professional email subject lines examples are given below:

i. Introduction Email

Introduce yourself and explain why you want to connect.

Example: “Introduction from a fellow [Industry] professional.”

ii. Mutual Connection

Mention a mutual connection or interest to establish rapport.

Example: “Connecting through [Mutual Connection’s Name].”

iii. Common Interest

Highlight a shared interest or hobby to start a conversation.

Example: “Fellow [Sport/Hobby] enthusiast interested in connecting.”

iv. Information Request

Ask for advice, information, or assistance in a specific area.

Example: “Looking for advice on [Industry/Topic].”

v. Referral Request

Request a referral or introduction to someone in your recipient’s network.

Example: “Request for a referral to [Company/Individual] in [Industry/Location].”

More Examples Of Network-building Subject Lines:

• Let’s connect and chat about [Industry/Interest].
• [Name], can we catch up over coffee?
• [Name], Let’s grab lunch and talk business.
• Interested in joining our [Group/Community]?
• I saw your recent work and wanted to reach out.
• [Name], Your work caught my attention.
• Let’s collaborate on [Project/Event].
• Congratulations on [professional achievement]! Do you have a moment to chat?
• [Name], Let’s discuss your expertise in [Industry/Topic].
• Hoping to network with other [Professionals/Experts] in [Industry/Interest]

18. Thank You Subject Lines

Thank you subject lines are a simple yet effective way to show gratitude and strengthen relationships. They can be used in a variety of situations, such as after a purchase or a meeting, or simply to thank someone for their time and support.

i. Showing Gratitude

Express gratitude and appreciation for your recipient’s actions or contributions.

Example: “Thank you for your generous support.”

ii. Follow-Up Appreciation

Follow up with a thank you after a meeting or conversation.

Example: “Thank you for taking the time to meet with me.”

iii. Appreciation For Feedback

Thank your recipient for their feedback or input.

Example: “Thank you for your valuable feedback on our product.”

iv. Thanking For The Referral Success

Thank your recipient for a referral or introduction.

Example: “Thank you for referring [Company/Individual] to me.”

v. Thanking for Testimonial Submission

Thank your recipient for a positive review or testimonial.

Example: “Thank you for the great testimonial; we really appreciate it.”

More Examples Of Thank You Subject Lines:

• Thank You for Your Recent Purchase! Here’s Something Special for You.
• We Couldn’t Do It Without You: Get a Sneak Peek of Our New Project
• Thanks for Being a Part of Our Community! Here’s What’s Coming Next.
• We’re Thankful for Your Referral: Here’s a Reward for YoThank You for Attending Our Event: Recap and Photos Inside
• Thank You for Your Referral! We’ve Got a Little Something for You.
• Thank You for Being a Valued Customer! Here’s a Special Offer Just for You.
• Your Feedback is Valued: Thank You for Completing Our Survey
• A Heartfelt Thank You for Being a Loyal Customer
• You Deserve a Treat: Enjoy this Discount as a Token of Our Gratitude
• Thank You for Your Support: Exciting News to Share!

19. Collaboration Subject Lines

Collaboration subject lines are effective in attracting the attention of potential partners and getting them interested in working with you. These are some of the best subject lines that should be clear and concise, highlighting the benefits of the partnership.

Collaborative emails tend to be very professional and straightforward.

i. Joint Opportunity

Propose a joint business opportunity or partnership.

Example: “Exploring a joint venture in [Industry/Market].”

ii. Shared Expertise

Offer your expertise to collaborate on a project or initiative.

Example: “Offering my expertise to collaborate on [Project/Task].”

iii. Co-Creation Proposal

Propose a collaboration to create something new or innovative.

Example: “Collaboration opportunity to develop [Product/Service].”

iv. Industry Networking

Suggest a collaboration to network or exchange industry insights.

Example: “Collaboration opportunity to connect with top [Industry] professionals.”

v. Teamwork Proposal

Propose a collaboration to work together on a specific task or project.

Example: “Joining forces to tackle [Project/Task] together.”

More Examples Of Collaboration Subject Lines:

• Let’s team up to create something great
• Working together towards a common goal
• This a partnership opportunity you don’t want to miss
• Join forces for a new project
• Collaboration request: [project idea]
• Let’s combine our strengths for [project name]
• Seeking a collaborative partner for [project type]
• Co-creating the future together
• Innovating together for better results
• Bringing our talents together for a successful project
• Want to Partner up for an exciting new launch?

20. Upsell/Cross Sell Email Subject Lines

Once a sale is made, it is natural to try and increase sales via cross-selling or upselling techniques via email. And the subject lines have to be very specific and benefit-rich.

Following are the professional and the best email subject lines example:

i. Upgrade to Premium

Encourage customers to upgrade to a premium version of a product or service for added features or benefits.

Example: “Upgrade to premium and unlock exclusive features!”

ii. Complementary products

Suggest additional products that complement the customer’s recent purchase.

Example: “Complete your look with these matching earrings!”

iii. Time-sensitive offers

Create a sense of urgency with limited-time offers or discounts.

Example: “Don’t miss out on 50% off; the offer ends tomorrow!”

iv. Personalized recommendations

Use customer data to personalize product recommendations based on purchase history or browsing behavior.

Example: “Based on your recent activity, we recommend these products for you!”

v. Bundle deals

Offer discounts when customers purchase multiple products together.

Example: “Buy 2, Get 1 Free! Stock up on your favorite products now!”

More Examples Of Upsell/Cross Sell Email Subject Lines:

• [First Name], upgrade your [product/service] and [benefit]
• [First Name], complete your purchase with [complementary product/service]
• Unlock [premium feature/benefit] and save big
• [First Name], don’t miss out on your exclusive [bundle offer/discount]
• Upgrade to [higher-tier product/service] and enjoy more benefits
• Top off your purchase with [add-on product/service]
• [First Name], based on your purchase history, you may also like [related products/services]
• Enhance your experience with [advanced package/product/service]
• [First Name], based on your recent activity, we suggest [complementary product/service]
• Upgrade your [product/service] and receive [personalized benefit]

Bonus Tips

While writing the best email subject lines, many things may get confusing at times. But here are a few tips to help you out.

Effective subject lines are critical in email marketing as they are the first thing a recipient sees and can determine whether or not they will open the email.

A strong subject line can grab attention, create curiosity, and encourage action. In contrast, a weak subject line can result in the email being deleted or marked as spam.

To maximize the impact of email subject lines, it’s important to experiment with different types of subject lines and analyze their performance. Different audiences may respond differently to certain subject line types, so it’s essential to find what works best for your specific target audience.

In this article, we’ve provided various effective & professional email subject line examples. By adapting and using these subject lines in your own email marketing efforts, you can increase your open rates, engagement, and conversions.

If you want to stay updated with our latest email marketing tips and tricks, be sure to subscribe to our email list.